Real time interactions in oTree using Django Channels

Auctions and real effort tasks

This code contains four applications to use in oTree [Chen2016].

The demo app based on this code is available at Heroku.

1. minimum: a bare example how to use Django Channels in oTree projects to build a very simple real effort task (subtracting random number from X).

2. realefforttask: a set of four different real effort tasks:

• summing up N numbers [Niederle2007].
• finding max of two matrices [Schram2017].
• decoding task [Erkal2011].
• counting 0s in a matrix [Abeler2011].

This app also provides a platform for development one's own tasks using TaskGenerator class from ret_functions module located in realefforttask app folder. To use it, create a child of TaskGenerator class in ret_functions module, and reference it in settings.py configuration for your app.

3. auctionone - a gift-exchange game [Fehr1993] where employers hire workers in the open auction, and workers reciprocate their salary in a subsequent real effort task stage.

4. double_auction - a trading platform where buyers and sellers can trade their goods by posting bids (for buyers) and asks (for sellers) [Smith1962].

References

[Chen2016]

Chen, D. L., Schonger, M., & Wickens, C. (2016). oTree—An open-source platform for laboratory, online, and field experiments. Journal of Behavioral and Experimental Finance, 9, 88-97.

[Niederle2007]

Niederle, M., & Vesterlund, L. (2007). Do women shy away from competition? Do men compete too much?. The quarterly journal of economics, 122(3), 1067-1101.

[Schram2017]

Weber, M., & Schram, A. (2017). The Non‐equivalence of Labour Market Taxes: A Real‐effort Experiment. The Economic Journal, 127(604), 2187-2215.

[Erkal2011]

Erkal, N., Gangadharan, L., & Nikiforakis, N. (2011). Relative earnings and giving in a real-effort experiment. American Economic Review, 101(7), 3330-48.

[Abeler2011]

Abeler, J., Falk, A., Goette, L., & Huffman, D. (2011). Reference points and effort provision. American Economic Review, 101(2), 470-92.

[Fehr1993]

Fehr, E., Kirchsteiger, G., & Riedl, A. (1993). Does fairness prevent market clearing? An experimental investigation. The quarterly journal of economics, 108(2), 437-459.

[Smith1962]

Smith, V. L. (1962). An experimental study of competitive market behavior. Journal of political economy, 70(2), 111-137.